US3898416A - Method and apparatus for the banding of objects - Google Patents

Method and apparatus for the banding of objects Download PDF

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Publication number
US3898416A
US3898416A US395206A US39520673A US3898416A US 3898416 A US3898416 A US 3898416A US 395206 A US395206 A US 395206A US 39520673 A US39520673 A US 39520673A US 3898416 A US3898416 A US 3898416A
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United States
Prior art keywords
band
tab
section
platform
wrapped
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
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US395206A
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English (en)
Inventor
Kenneth Frederic Shotting
Jr Sidney Clark Porter
William Earl Moon
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Premier Refractories and Chemicals Inc
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Combustion Engineering Inc
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Application filed by Combustion Engineering Inc filed Critical Combustion Engineering Inc
Priority to US395206A priority Critical patent/US3898416A/en
Priority to CA207,855A priority patent/CA1023532A/en
Priority to DE2442109A priority patent/DE2442109C2/de
Priority to BE148243A priority patent/BE819587A/xx
Priority to GB3904474A priority patent/GB1471786A/en
Priority to JP10215374A priority patent/JPS5620957B2/ja
Publication of US3898416A publication Critical patent/US3898416A/en
Application granted granted Critical
Assigned to VFR, INC., 901 EAST 8TH AVENUE, KING OF PRUSSIA, PA. 19406, A DE. CORP. reassignment VFR, INC., 901 EAST 8TH AVENUE, KING OF PRUSSIA, PA. 19406, A DE. CORP. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: COMBUSTION ENGINEERING, INC.
Assigned to PREMIER REFRACTORIES AND CHEMICALS INC., reassignment PREMIER REFRACTORIES AND CHEMICALS INC., ASSIGNMENT OF ASSIGNORS INTEREST. EFFECTIVE 10-28-88 Assignors: VFR, INC.,
Assigned to CONTINENTAL BANK N.A., A NATIONAL BANKING ASSOCIATION reassignment CONTINENTAL BANK N.A., A NATIONAL BANKING ASSOCIATION SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: PREMIER REFRACTORIES AND CHEMICALS INC.
Assigned to CONTINENTAL BANK N.A. reassignment CONTINENTAL BANK N.A. SECURITY INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: AMERICAN PREMIER, INC., A DE CORP.
Assigned to PREMIER REFRACTORIES AND CHEMICALS INC., A DE CORP. reassignment PREMIER REFRACTORIES AND CHEMICALS INC., A DE CORP. RELEASE BY SECURED PARTY OF A SECURITY AGREEMENT RECORDED AT REEL 5125 FRAME 0289 Assignors: CONTINENTAL BANK N.A.
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Expired - Lifetime legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D41/00—Casting melt-holding vessels, e.g. ladles, tundishes, cups or the like
    • B22D41/50—Pouring-nozzles
    • B22D41/52—Manufacturing or repairing thereof

Definitions

  • a tab is affixed to the end of a band and the band is wrapped around the object so as to divide the band into a wrapped section and an unwrapped section, a first portion of the wrapped section overlying the tab and a second portion of the wrapped section. While the tab is restrained against movement in one direction around the object, the unwrapped section of the band is pulled so as to tighten the band around the object. While the band is held in this position, automatic welding means indirectly pressure spotweld the tab and the first and second portions of the wrapped section together.
  • This invention relates to the art of placing bands around one or more objects and more particularly to a method and apparatus for tightly wrapping and securely fastening bands around such objects including refractory nozzles for molten steel pouring ladles.
  • a ladle In the making of steel, a ladle is required for receiving molten steel from the steel-making furnace and transporting the steel from the furnace to an area in which ingots or castings are made. The molten steel is then allowed to flow from the ladle into the appropriate molds or dishes through one or more nozzle openings in the bottom thereof, the nozzle openings being closed and opened by means of a stopper which can be raised and lowered in the ladle.
  • These ladles must have some means to prevent the molten steel from penetrating to the outer metal sheath of the ladle and as such require a refractory lining.
  • nozzles are required in the bottom of the ladle which are made of a refractory material so as to be capable of withstanding the extreme heat experienced in the ladle and the erosive action due to the stopper being raised and lowered.
  • a refractory mortar is packed into the openings in the bottom of the ladle before the nozzles are inserted. This refractory mortar serves to close any passages around the outside of the nozzles.
  • Another prior art method involves placing a clip on one end of the band, passing the other endaround the nozzle and through an opening in the clip, pulling the band tight around the nozzle and then crimping the clip. Although this procedure results ina strong, dependable and tight fitting band, the clip is too thick and accordingly it shears away too much protective mortar when the nozzle is pushed into place in the ladle bottom.
  • the present invention overcomes the above discussed and other disadvantages by providing a novel method for securely fastening bands to an object or group of objects.
  • the method comprises first affixing a tab to one end of the band.
  • the object or group of objects is held in position and the band is wrapped therearound so as to divide the band into a wrapped section and an unwrapped section with a first portion of the wrapped section overyling a second portion of the wrapped section.
  • the tab is restrained against movement in a first direction therearound.
  • the unwrapped section of the band is pulled so that the first portion of the wrapped section of the band is moved in the first direction to tighten the band around the object or group of objects. While the band is held in this pulled position, the first and second portions of the wrapped section of the band are welded together.
  • Apparatus for accomplishing this method comprises a table for supporting the object or group of objects and a clamp means for holding the object or group in a fixed position on the table.
  • Tab restraining means engagable with the tab is provided for restraining the tab against movement in a first direction around the object or group.
  • Pulling means are also provided engagable with the unwrapped section of the band for pulling the band in the first direction to exert a force on the first portion of the wrapped section of the band.
  • welding means is provided for welding together the first and second portions of the wrapped section of the band.
  • the welding means is an automatic welding apparatus which is operable when the band has been pulled tight by the pulling means.
  • FIG. 1 is a partial side sectional view of a molten metal pouring ladle showing one use for a banded obect.
  • FIG. 2 is a front elevational view of the banding apparatus of the present invention.
  • FIG. 3 is a side elevational view of the banding apparatus taken along line 3-3 of FIG. 2 but shown with an object to be banded in place.
  • FIG. 4 is a sectional plan view taken along line 4-4 of FIG. 2 but shown with an object to be banded in place.
  • FIG. 5 is an enlarged view of a portion of the view of FIG. 4 but with the cutting means being shown in the cutting position.
  • FIG. 6 is an elevational view taken along line 6-6 of FIG. 4 showing the pulling means.
  • FIG. 7 is a side view taken along line 7-7 of FIG. 5.
  • FIG. 1 shows a partial side sectional view of a typical molten steel pouring ladle 12 in which the pouring nozzle 10 is banded in accordance with the present invention as described hereinbelow.
  • the ladle 12 comprises a steel shell or vessel 14 lined interiorally with refractory brick 16.
  • a nozzle opening 18 is defined in the bottom of the vessel 14 by a refractory nozzle block 21 and a cylindrical steel ring 20 whose inner dimensions are slightly larger than the outer dimension of the nozzle 10.
  • Refractory mortar 22 is typically packed in the nozzle opening 18 and a cylindrically shaped nozzle 10 is slipped into the opening 18 from below the ladle 12. As best seen in FIGS.
  • the nozzle is made of a refractory material and has a central bore 24 therethrough.
  • One end of the nozzle is provided with a reduced cylindrical portion 26 which fits through an opening in the nozzle cover plate 28 which is attached to the steel ring 20 to hold the nozzle 10 in place in the ladle 12.
  • the other end of the nozzle is provided with a conical surface into which a stopper or plunger 30 may be fitted to stop the flow of molten steel therethrough out of the ladle 12.
  • the nozzle sizes may vary from 6-12 inches in diameter although other sizes of cylindrically shaped objects may be accommodated with slight modifications.
  • the nozzle 10 it is sometimes desirable to band the nozzle 10 to protect against insufficient reheat expansion of the nozzle.
  • some of the protective mortar 22 is sheared away as the nozzle 10 is inserted into the nozzle opening 18.
  • the band 32 is then wrapped around the nozzle 10 so as to divide the band 32 into a wrapped section 38 and an unwrapped section 40.
  • a first portion of the wrapped section 38 which is adjacent to the unwrapped section 40 overlies or overlaps a second portion of the wrapped section 38 which is adjacent to the tab end of the band 32.
  • the tab 36 is restrained against movement in a first direction around the nozzle 10
  • the unwrapped section 40 of the band 32 is pulled so as to move the first or overlapping portion in the first direction.
  • the band 32 is held in this position and the overlapped and overlapping portions are welded together.
  • the overlapping portion, the overlapped portion and the tab 36 are all welded together by an automatic welding apparatus so as to provide a strong, dependable and consistent weld.
  • the maximum thickness of the fastened band 32 outward from the surface of the nozzle can be made to be approximately A; inch.
  • the thickness of the band at the crimped end can only be minimized to approximately 5 inch. Accordingly,
  • the amount of sheared mortar 34 when the nozzle 10 is inserted into the ladle 12 can approximatelybe cut in half, thereby reducing the probability of molten steel leaking through the mortar 22 and damaging the steel ladle 12.
  • the apparatus 50 for tightly wrapping and automatically welding the band around the nozzle will now be described with reference to FIGS. 2 through 7.
  • the apparatus 50 can be used to band any object or group of objects in which it is desirable to tightly wrap and securely fasten a band around the object or group of objects.
  • the apparatus 50 comprises generally a base 52, an object supporting and holding means 54, and a banding platform 56 supported for longitudinal and pivotal movement so that the platform 56 can be moved longitudinally and laterally relative to the nozzle 10.
  • the banding platform 56 supports the means 58 for positioning and holding the platform laterally relative to the nozzle 10 to be banded, the tab restraining means 60, the band pulling means 62 and the automatic welding means 64.
  • the base 52 supports a vertical upright support standard 66 by means of braces 68.
  • the upright support standard 66 has a laterally extending portion 70 at its upper end from which is supported the control panel 72 for the banding apparatus 50 and a vertical extending air cylinder 74.
  • the piston rod 76 of the air cylinder 74 is adapted for vertical reciprocal movement and has a clamping pad 78 attached to its end.
  • the air cylinder 74 and clamping pad 78 are aligned and spaced from an object support table 80 which is fixedly supported on the base 52 by standard 82.
  • the nozzle 10 which is to be banded is positioned on the table 80 beneath the clamping air cylinder 74 and the air cylinder 74 may then be actuated to clamp and rigidly hold the nozzle 10 in place.
  • the surface of the table 80 and the clamp pad 78 are preferably made of rubber or other resilient material so as not to damage the object which is to be supported therebetween.
  • the base 52 also supports a vertically extending substantially cylindrical support column 84 for rotation about the central axis of the column.
  • the lower end of the support column 84 is journaled in a bearing 86 affixed to the base 52 and the upper end is journaled in a bearing 88 which is laterally supported from the upright support standard 66.
  • a platform hoist motor 90 having a chain 92 is attached to the upper end of the rotating support column 84.
  • the banding platform 56 is supported from the support column 84 by the chain 92 and is guided for longitudinal movement therealong by a roller assembly 94 integrally attached to the platform 56.
  • the roller assembly 94 comprises three pairs of spaced rollers 96 circumferentially arranged and supported between upper and lower annular support plates 98, 100. As shown in FIG.
  • the lower support plate 98 is integrally attached to the platform such as by welding or bolting.
  • the rollers 96 are adapted to enter guideways 102 defined between longitudinally extending guide rails 104 affixed to the outer surface of the rotating support column 84.
  • the hoist motor 90 which is controlled by lever 106, the platform 56 can be raised or lowered relative to the support column 84 and accordingly, relative to the nozzle 10 to be banded which is supported on the table 80.
  • the support column 84 and platform 56 freely pivot as a unit about the axis of the support column 84 to adjust the lateral position of the platform 56 relative to the supported nozzle as will be apparent hereinbelow.
  • the banding platform 56 supports all the equipment necessary to securely fasten bands to cylindrically shaped objects.
  • the left side of the platform 56 supports a tab restraining means 60 and automatic welding means 64.
  • the tab restraining means 60 is of a two-piece construction and acts as a guide and holder for the tab 36 affixed to the end of the'band 32.
  • One piece is a stationary support member 108 which is supported at one end from the platform 56 such as by welding.
  • the other piece is a guide member 110 which is supported from the other end of the support member 108 for pivotal movement about a pin 112 which is positioned in opposed recesses 113 in the support and guide members 108, 110.
  • a spring 114 (or two springs if necessary) holds the two members 108, 110 together and biases the guide member 110 for counterclockwise pivotal movement about the pin 112.
  • a second pin 116 laterally extending from the support member 108, is adapted to enter a recess 118 in the guide member 110 for guiding the pivotal motion thereof.
  • the guide member 110 is provided with upper and lower spaced feet 120, 122 for engaging the nozzle 10 when the platform 56 is pivoted about the axis of a support column 84. As can be appreciated, the guide member 110 will pivot clockwise against the bias of spring 114 to ensure that all four feet 120, 122 engage the nozzle 10 as the platform 56 is pivoted to move the guide member 110 into position.
  • the vertical spacing between the feet 120, 122 should be greater than the width of the band 32 and less than the diagonal length of the tab 36 so that the band 32 can freely pass around the nozzle while the tab 36 is restrained.
  • a convenient length may be chosen depending on the range of sizes of the nozzles 10 to be banded.
  • the three welding guns 124 of the automatic welding means 64 are mounted on the piston rods 128 of three air cylinders 126 which in turn are mounted on the platform in a triangular arrangement as can best be seen in FIG. 3.
  • the electrodes 132, 134, 136 of the welding guns 124 can be moved into contact with the band 32 and tab 36 to indirect pressure spotweld the band 32 and tab 36.
  • the indirect pressure spotweld technique is utilized in order to obtain a strong, dependable and consistent weld. This technique involves the use of a welding electrode, a dummy electrode and the pieces to be welded to complete the circuit to the welding transformer (not shown).
  • two welding electrodes 132, 136 and one dummy electrode 134 are used to make two indirect pressure spotwelds as indicated by reference numeral 138 in FIG. 7.
  • the welding procedure is as follows. Two of the air cylinders 126 are actuated to move and press the dummy electrode 134 and one of the welding electrodes 136 into contact with the tab 36 and band 32 respectively. As best seen in FIG. 7, the dummy electrode 134 just contacts the uppermost corner of the tab 36 (indicated by numeral 140) and the welding electrode 136 contacts the outer overlapping portion of the band 32 near one of the two side corners of the tab (indicated by 138). Current is then passed from the welding transformer (not shown) through the welding electrode 136, through the overlapping and overlapped portion of the band 32, through the tab 36 to the dummy electrode 134 and then back to the welding transformer.
  • the overlapping portion of the band 32, the overlapped portion of the band 32 which is attached to the tab 36 and the tab 36 are welded together as indicated by weld contact 38.
  • the welding electrode 136 is retracted and the other welding electrode 132 pressed into contact with the overlapping portion of the band 32 near the other side corner of the tab 36 and current then passed through the welding electrode 132 to make a second weld. Both the dummy electrode 134 and the other welding electrode 132 are then retracted.
  • the required current passing through the electrodes 132, 134, 136 and the required pressure applied against the band 32 and tab 36 to obtain a strong, dependable weld depends on the thickness of the band 32 and tab 36, the diameter of the electrode tip which contacts the band 32 and tab 36, and the time of contact. The use of this procedure and the determination of these parameters is deemed to be within the skill of the artisan and accordingly, no further recitation with regard to this is deemed necessary in order to fully understand the present invention.
  • the means 58 for laterally positioning and holding the platform 56 relative to the nozzle 10 is mounted on the right side of the platform 56 opposite from the tab restraining means 60 and welding means 64 and comprises an air cylinder 142 and piston rod 144.
  • the piston rod 144 of the air cylinder 142 is provided with a band guide 146 which contacts the nozzle 10 when the air cylinder 142 is actuated to pivot the platform 56 about an axis of a support column 84 to move the four feet 120, 122 of the tab restraining means 60 into engagement with the nozzle 10.
  • the air cylinder 142 and piston rod 144 also serve to restrain the platform 56 against pivotal movement when the pressure of the welding guns 124 is applied against the nozzle 10.
  • the air cylinder 142 is fixed to the platform 56 so that the band guide 146 is located approximately diametrically opposite the guide member of tab restraining means 60 when the nozzle 10 is in position on the table 80. As can be appreciated, this position is approximate in order that the banding apparatus 50 be able to accommodate a variety of nozzle sizes and since precise positioning is not required.
  • the band guide 146 has a contact surface 148 which roughly approximates a portion of the circumference of the nozzle 10. To maintain proper horizontal positioning of the guide 146 with respect to the nozzle 10, the guide 146 has one end fixed to the end of the piston rod 144 and the other end fixed to a bar 150 which is slidably positioned in a channeled member 152 adjacent the air cylinder 142.
  • the band pulling means 62 for pulling the unwrapped section 40 of the band to tightly wrap it around the nozzle is positioned on the backside of the platform and comprises a rotary air motor 156, a reciprocal air cylinder 158 and two rollers 160, 162.
  • the air motor 156 is vertically mounted on the platform 56 by means of a standard 164.
  • the drive shaft 166 of the air motor 156 extends downward and is journaled in a lower casing 168.
  • a knurled drive roller 160 is mounted on a roller hub 170 which is supported from the drive shaft 166 in the slotted opening 172 in the lower casing 168.
  • the air cylinder 158 is pivotably.
  • an idler roller support yoke 178 is pin connected by means of a pin 180.
  • An idler roller 162 is pin supported between the two flanges 182 of the idler support yoke 178 by pin 184 and is adapted to engage the knurled roller 160 ofthe air motor 156.
  • the idler support yoke 178 has an extension 186 which is also pin connected to the platform 56 by pin 188 to ensure proper mating engagement between the idler roller 162 and the knurled roller 160 upon actuation of the air cylinder 158.
  • the band 32 which is to be pulled by the pulling means 62 is fed between the knurled roller 160 and the idler roller 162 and the air cylinder 158 actuated to move the idler roller 162 into position to clamp the band 32 between the rollers 160, 162.
  • the air motor 156 can then be actuated to rotate the knurled roller 160 counterclockwise which causes the band 32 to be pulled through the two rollers 160, 162 as a result of the frictional engagement between the band 32 and the two rollers 160, 162.
  • a cutting means 190 for removing or severing the un' wrapped section 40 from the wrapped section 38 of the band 32 after welding has been completed is shown positioned between the tab restraining means 60 and the automatic welding means 64.
  • the cutting means 190 is mounted to the platform 56 by means of a bracket 192 at substantially the same vertical elevation as the tab restraining means 60 and the lower two welding guns 124.
  • the cutting means 190 comprises an air cylinder 194 with a horizontally extending piston rod 196 and a cutting blade 198 mounted to the piston rod 196 by means of a chuck 200. As best seen with reference to FIGS.
  • the cutting blade 198 is provided with a vertical cutting edge 202 for contacting and cutting the outer overlapping portion of the band 32 to the left of the two welds 138 as seen in FIG. 7.
  • the vertical height of the cutting edge 202 is slightly greater than the width of the band 32 but less than the vertical spacing between the upper and lower set of feet 120, 122 of the tab restraining means 60.
  • the extension of the cutting blade 198 outwards from the piston rod 196 and the stroke length of the piston rod 196 are adjustable so that the cutting edge 202 will only cut the outer overlying portion of the band 32 when the air cylinder 194 of the cutting means 190 is actuated.
  • the banding apparatus 50 to tightly wrap and securely fasten a band 32 about a nozzle 10 will now be described.
  • a band 32 and more practically a plurality of bands 32 are assembled with a tab 36 attached to one end of each band 32.
  • This can be accomplished for example by spot welding.
  • the tabs 36 are square and the band 32 is welded across two diagonally opposite corners of a tab 36. Such an arrangement permits the tab to be restrained at the other two corners by the tab restraining means 60 while permitting the band 32 attached thereto to pass between the upper and lower sets of feet 120. 122 and then wrap around the nozzle 10.
  • a nozzle 10 is positioned on the table of the banding apparatus 50 and then clamped by the clamping air cylinder 74.
  • the platform 56 is then positioned vertically with respect to the nozzle 10 by actuation of the air hoist motor for the first banding operation and pivoted about the central axis of a support column 84 to move the tab restraining means 60 adjacent the nozzle 10.
  • the backup air cylinder 142 is then actuated through the control panel 72 to finish lateral adjustment of the platform 56 with respect to the nozzle 10 and to hold it thereinplace.
  • the band 32 with the tab 36 affixed to one end, is then positioned around the nozzle as follows. First the free end of the band is pulled between the upper and lower feet 120, 122 of the tab restraining means 60 to position the tab 36 in place adjacent the right side of the guide member as seen in FIGS. 5 and 7. Next, the free end of the band 32 is wrapped around the nozzle 10 with the lower edge being allowed to rest on the band guide 146 of the positioning means 56. This ensures that the band 32 will be horizontal when it is pulled tight since the vertical elevation of the band guide 146 is substantially equal to the vertical elevation of a tab restraining means 60 and the band pulling means 62.
  • the free end is then fed a second time between the upper and lower feet 120, 122 to overline the tab 36 and a portion of the wrapped section 38 of the band 32.
  • the free end or unwrapped section 40 of the band is then fed between the knurled roller and the idler roller 162 of the band pulling means 62 and the air cylinder 158 and air motor 156 actuated.
  • this action will cause the band 32 to be pulled tight around the nozzle 10 since the tab end of the band 32 is restrained against movement by the tab restraining means 60 in the direction that the unwrapped section 40 of the band 32 is being pulled.
  • the air cylinders 126 associated with the welding gun 124 are sequentially actuated through the control panel 72 to weld together the overlapping portion of the band 32 the overlapped portion of the band 32 and the tab 36.
  • the central dummy electrode 134 is first pressed into contact with just the tab 36 and then the other electrodes 132, 136 pressed into contact and retracted, one at a time, to indirectly pressure spotweld the band portions and tab 36 together.
  • the central dummy electrode 134 is then retracted and the air motor 156 of the pulling means 62 stopped.
  • the air cylinder 194 of the cutting means can then be actuated to cause the cutting blade 198 to contact just the unwrapped section 40 of the band 32 adjacent the wrapped section 38 to cut or sever the unwrapped section 40.
  • the piston rods 176, 144 of the air cylinder 158 and the backup air cylinder 142 are retracted. If a second or more bands 32 are to be securely fastened to the nozzle 10 at other longitudinal positions, the air hoist motor 90 can be actuated to adjust the longitudinal elevation of the platform 56. The banding operations at these other elevations are then accomplished in a similar manner as described hereinabove. After all bands are securely fastened to the nozzle 10, the clamping air cylinder 72 can be retracted and the nozzle 10 removed from the table 80. This completes the operation of the banding apparatus 50.
  • the cut ting blade 198 could just dent" the unwrapped section 40 of the band 32 so that the band 32 is broken upon bending of the free end of the band 32. Or, after welding is completed, the free end could be flexed back and forth to break the band 32.
  • the size of the air cylinders and air motors and their operating pressures are dependent upon the specific requirements of the apparatus 50 and of the size of the objects to be 'banded.
  • the determination of these and other parameters is deemed to be within the ordinary skill of the artisan and accordingly it is not deemed necessary to further detail the system described hereinabove with reference to such parameters.
  • a novel method and apparatus for securely fastening bands 32 to an object or plurality of objects Use of a relatively thin tab 36 to which the ends of the wrapped sections 38 of the band 32 are welded, results in a strong, dependable and consistent means of securing a band to an object. Furthermore, the use of such a tab 36 permits the band to be tightly wrapped around the object. Still further, when the present invention is used to band refractory nozzles 10, the lateral protrusions at the band joint can be maintained within acceptable limits as hereinabove noted.
  • a method of securing a band to at least one object comprising the steps of:
  • step of restraining said tab against movement in said first direction comprises: rigidly, temporarily positioning a tab restraining means on the surface of said object, said tab restraining means permitting said band to pass freely between said tab restraining means and the wall of said object but preventing said tab from passing therebetween.
  • step of pulling said band comprises: guiding said unwrapped section of said band between a drive roller and an idler roller; moving one of said rollers toward the other of said rollers to clamp said band therebetween; and rotating said drive roller to move said'unwrapped section of said band between said rollers.
  • step of welding together said first portion of said wrapped section, said one end of said band and said tab comprises indirectly pressure spotwelding said first portion, said one end and said tab together.
  • An apparatus for tightly wrapping and securely fastening a band wrapped around at least one object the band having a tab affixed to one end thereof and being divided into a wrapped section which is wrapped around the object and an unwrapped section, the wrapped section of the band having a first portion which overlaps both the tab and the one end of the band having the tab affixed thereto, the apparatus comprising:
  • object holding means for holding the object in place
  • tab restraining means engagable with said tab for restraining said tab from movement in a first direction around the object
  • welding means for welding together the first portion of said wrapped section, said one end of said band and said tab.
  • the apparatus of claim 6 further including a platform on which said tab restraining means, said pulling means and said welding means are fixedly supported; and platform support means for supporting said platform for relative longitudinal movement and relative lateral movement with respect to the object.
  • the apparatus of claim 7 further including means for laterally positioning and holding in place said platform with respect to the object to properly position said tab restraining means, said pulling means and said welding means.
  • said platform support means comprises a longitudinally extending support column having a longitudinal axis which supports said platform for lateral pivotal movement about said longitudinal axis and for longitudinal movement therealong; and wherein said lateral positioning means comprises a cylinder means mounted on said platform having a piston rod engagable with the object for pivoting said platform into position and to hold it thereinplace.
  • said tab restraining means comprises a guide member and a support member for supporting said guide member from said platform, said guide member being adapted to contact the surface of the object when said platform is pivoted into position to permit said band to pass between said guide member and the object and to prevent said tab from passing therebetween.
  • said cylinder means is mounted on said platform substantially opposed to said guide member and on the opposite side of the object from said guide member; wherein said guide member has longitudinally spaced feet for contacting the object, the longitudinal spacing between said feet being greater than the longitudinal dimension of the wrapped section of said band but less than the longitudinal dimension of the tab affixed to said band, and wherein said guide member is pivotably mounted on said support member to pivot about a longitudinal axis when the object is moved into contact with said guide member by said cylinder means.
  • said pulling means comprises: a pair of rollers mounted for rotational movement about parallel axes and adapted to engage the unwrapped section of said band therebetween;

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  • Engineering & Computer Science (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Basic Packing Technique (AREA)
  • Casting Support Devices, Ladles, And Melt Control Thereby (AREA)
  • Resistance Welding (AREA)
US395206A 1973-09-07 1973-09-07 Method and apparatus for the banding of objects Expired - Lifetime US3898416A (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
US395206A US3898416A (en) 1973-09-07 1973-09-07 Method and apparatus for the banding of objects
CA207,855A CA1023532A (en) 1973-09-07 1974-08-27 Method and apparatus for the banding of objects
DE2442109A DE2442109C2 (de) 1973-09-07 1974-09-03 Verfahren und Vorrichtung zum Bandagieren von Gegenständen, vorzugsweise von feuerfest bewehrten Ausgußstutzen von Gießpfannen
BE148243A BE819587A (fr) 1973-09-07 1974-09-05 Procede et appareil pour le bandage d'objets
JP10215374A JPS5620957B2 (de) 1973-09-07 1974-09-06
GB3904474A GB1471786A (en) 1973-09-07 1974-09-06 Method and apparatus for the banding of objects

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US395206A US3898416A (en) 1973-09-07 1973-09-07 Method and apparatus for the banding of objects

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US3898416A true US3898416A (en) 1975-08-05

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US395206A Expired - Lifetime US3898416A (en) 1973-09-07 1973-09-07 Method and apparatus for the banding of objects

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US (1) US3898416A (de)
JP (1) JPS5620957B2 (de)
BE (1) BE819587A (de)
CA (1) CA1023532A (de)
DE (1) DE2442109C2 (de)
GB (1) GB1471786A (de)

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US4340802A (en) * 1977-12-05 1982-07-20 Covington Brothers Technologies Method and apparatus for welding
US4655264A (en) * 1983-10-27 1987-04-07 Ben Clements & Sons, Inc. Twist tying machine
US4946088A (en) * 1989-07-14 1990-08-07 Chuang Shyue S Bushing forming machine
US5225765A (en) * 1984-08-15 1993-07-06 Michael Callahan Inductorless controlled transition and other light dimmers

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GB1603400A (en) * 1977-04-20 1981-11-25 Foseco Trading Ag Shields for slide gates

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US181052A (en) * 1876-08-15 Improvement in band pulling and locking machines for baling cotton
US2233526A (en) * 1937-10-09 1941-03-04 Bernhard Berghaus Apparatus for double spot or seam welding
US2438386A (en) * 1945-07-12 1948-03-23 Signode Steel Strapping Co Bundle binding machine
US2972294A (en) * 1957-08-05 1961-02-21 Laminoirs Sa Des Binding machine
US3439606A (en) * 1966-10-10 1969-04-22 Vitkovice Zelezarny Steel-tape binding machine

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Publication number Priority date Publication date Assignee Title
JPS5133032Y2 (de) * 1971-08-28 1976-08-17

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US181052A (en) * 1876-08-15 Improvement in band pulling and locking machines for baling cotton
US2233526A (en) * 1937-10-09 1941-03-04 Bernhard Berghaus Apparatus for double spot or seam welding
US2438386A (en) * 1945-07-12 1948-03-23 Signode Steel Strapping Co Bundle binding machine
US2972294A (en) * 1957-08-05 1961-02-21 Laminoirs Sa Des Binding machine
US3439606A (en) * 1966-10-10 1969-04-22 Vitkovice Zelezarny Steel-tape binding machine

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4340802A (en) * 1977-12-05 1982-07-20 Covington Brothers Technologies Method and apparatus for welding
US4655264A (en) * 1983-10-27 1987-04-07 Ben Clements & Sons, Inc. Twist tying machine
US5225765A (en) * 1984-08-15 1993-07-06 Michael Callahan Inductorless controlled transition and other light dimmers
US4946088A (en) * 1989-07-14 1990-08-07 Chuang Shyue S Bushing forming machine

Also Published As

Publication number Publication date
JPS5620957B2 (de) 1981-05-16
CA1023532A (en) 1978-01-03
GB1471786A (en) 1977-04-27
JPS5054524A (de) 1975-05-14
DE2442109B1 (de) 1975-02-27
BE819587A (fr) 1974-12-31
DE2442109C2 (de) 1975-10-16

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